You might be surprised on the weight difference. The SLR wheels are much lighter than other Polaris wheels. IMO they are truly premium wheels. I don't know the actual weights but it is noticeable when your grab one for mounting.
I have a local buyer for my old rims, seats and steering wheel... So I wanted to move on this new set quickly. Originally, I was looking to get the ADV10R CS which is considerably lighter (but @sideslinger saw the price and said no )!
Still, I've heard some great reviews of this config from others and "think" there won't be too great of a performance hit... If there is, @Jeff@DDMWorks and @Dave@DDMWorks will be handing down some spankings!